Kikuru Madan, a monster hunter with excellent performance, because of his particular job in the forest, He decided to quit his job because of fear wasting his own youth. the reason he want to quit because one of his friend married.

One day there is a new recruiter. Enome the Guild recepcionist-girl asking Him to accompany Hitamu Kyan the Lolipai Martial-Artist to keep her save in the back and teach her how to work. So He decided for accept the request. The reason behind, he worried about her and the other half he wanted to make her became successor before he retire completely. Sadly his plan to retire overthrow with Hitamu uselessness and always attract some monster. However, Can Kikuru Madan retire peacefully, with the presence of some useless newbies recruitment?

(Source: MU)

When Chinatsu joined the student council, she found it wasn't nearly as cool as she had expected. The president just slept all the time, and the vice president just did paperwork. There was no fighting evil, no sex appeal... just normal school stuff. It's up to Chinatsu to liven things up!
(Source: MangaHelpers)

Mikai Yui is a high school girl detective... sort of! She's already 19, but she's on her third repeat of the final year of high school. It seems like people get murdered around her all the time, but she's always excited to declare her expertise and trip over the body. Her "assistant," who she calls "Rinrin," is actually just a classmate (not an assistant or even a friend), who happens to be a lot better at figuring out murder mysteries. Their first murder of the series happens on a school excursion, when a maid finds a man stabbed to death in his hotel room!

(Source: MangaHelpers)